Meta: Enable NVME by default

This results in significant performance improvements in both sequential
and random disk reading and writing.

Meta/run.sh

@@ -240,18 +240,14 @@ if [ -z "$SERENITY_QEMU_DISPLAY_DEVICE" ]; then
     fi
 fi
 
-# Check if SERENITY_NVME_ENABLE is unset
-if [ -z ${SERENITY_NVME_ENABLE+x} ]; then
-    SERENITY_BOOT_DRIVE="-drive file=${SERENITY_DISK_IMAGE},format=raw,index=0,media=disk,id=disk"
+# NVME is enabled by default; disable by setting SERENITY_NVME_ENABLE=0
+if [ -z "${SERENITY_NVME_ENABLE}" ] || [ "${SERENITY_NVME_ENABLE}" -eq 1 ]; then
+    SERENITY_BOOT_DRIVE="-drive file=${SERENITY_DISK_IMAGE},format=raw,index=0,media=disk,if=none,id=disk"
+    SERENITY_BOOT_DRIVE="${SERENITY_BOOT_DRIVE} -device i82801b11-bridge,id=bridge4 -device sdhci-pci,bus=bridge4"
+    SERENITY_BOOT_DRIVE="${SERENITY_BOOT_DRIVE} -device nvme,serial=deadbeef,drive=disk,bus=bridge4,logical_block_size=4096,physical_block_size=4096"
+    SERENITY_KERNEL_CMDLINE="${SERENITY_KERNEL_CMDLINE} root=nvme0:1:0"
 else
-    if [ "$SERENITY_NVME_ENABLE" -eq 1 ]; then
-        SERENITY_BOOT_DRIVE="-drive file=${SERENITY_DISK_IMAGE},format=raw,index=0,media=disk,if=none,id=disk"
-        SERENITY_BOOT_DRIVE="$SERENITY_BOOT_DRIVE -device i82801b11-bridge,id=bridge4 -device sdhci-pci,bus=bridge4"
-        SERENITY_BOOT_DRIVE="$SERENITY_BOOT_DRIVE -device nvme,serial=deadbeef,drive=disk,bus=bridge4,logical_block_size=4096,physical_block_size=4096"
-        SERENITY_KERNEL_CMDLINE="$SERENITY_KERNEL_CMDLINE root=nvme0:1:0"
-    else
-        SERENITY_BOOT_DRIVE="-drive file=${SERENITY_DISK_IMAGE},format=raw,index=0,media=disk,id=disk"
-    fi
+    SERENITY_BOOT_DRIVE="-drive file=${SERENITY_DISK_IMAGE},format=raw,index=0,media=disk,id=disk"
 fi
 
 if [ -n "${SERENITY_USE_SDCARD}" ] && [ "${SERENITY_USE_SDCARD}" -eq 1 ]; then
@@ -532,12 +528,12 @@ elif [ "$SERENITY_RUN" = "ci" ]; then
         "$SERENITY_QEMU_BIN" \
             $SERENITY_EXTRA_QEMU_ARGS \
             $SERENITY_VIRT_TECH_ARG \
+            $SERENITY_BOOT_DRIVE \
             -m $SERENITY_RAM_SIZE \
             -cpu $SERENITY_QEMU_CPU \
             -d guest_errors \
             -no-reboot \
             -smp ${SERENITY_CPUS} \
-            -drive file=${SERENITY_DISK_IMAGE},format=raw,index=0,media=disk \
             -device ich9-ahci \
             -nographic \
             -display none \